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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Provide nourishment for the developing sperm






2. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






3. 1-2 days






4. Allows extension of penis without fibro-elastic penis






5. 30-38 hours after estrus cycle begins






6. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






7. Look for infection - split - and rupture of the penis






8. 10-37 (21) days






9. 19-23 (21) days






10. 265-285 days






11. ~305 days (altough often longer due to breeding difficulties)






12. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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13. What makes the milk flow through the mammary glands?






14. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






15. Actual heat cycle (period)






16. What about the sperm for a bull which has been castrated but still has testicles?






17. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.






18. (male) pushes the testes upward toward the body for warmth or protection






19. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






20. Sperm is produced here






21. Scar tissue plugs up chambers of udder






22. The more stressed out the male is - the less sperm he is going to produce






23. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






24. 4-6 days






25. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






26. 30 hours after estrus begins






27. (male) pushes the testes outward toward the legs for a cool-down off of the body






28. Animals which have only one estrous cycle (ex: dog - fox)






29. 24 hours before end of estrus cycle






30. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






31. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






32. Animals which have many estrous periods per year (ex: cow - sow)






33. 26 hours after estrus begins






34. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






35. 1-2 days






36. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






37. 19-23 (21) days






38. Depository for semen during insemination. where urine leaves the body






39. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






40. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






41. Can survive ~7 days in cow. vast majority <48 hours






42. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






43. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






44. What about the sperm for a bull which has been castrated but still has testicles?






45. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






46. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






47. Luteolysis happens because of the ____________ hormone






48. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






49. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






50. 19-23 (21) days